Walter Hilton - Article from the Catholic Encyclopedia about Hilton's spiritual writings. The Song of Angels - Hilton's short tract, with language modernized by Harry Plantinga. Of the Song of Angels - A short treatise by Hilton. From Pepwell's collection, edited and with notes by Edmund G. Gardner in "The Cell of Self-Knowledge." The Scale of Perfection - Edited by Thomas H. Bestul. In Middle English, slightly adapted for the Web. Each Book in its own file, with notes. The Scale (or Ladder) of Perfection - Full text of Hilton's most famous and enduring work. From the 1901 Benziger Brothers edition. Treatise Written to a Devout Man - By Walter Hilton. Complete text. Walter Hilton of Thurgarton, Mystic - Brief biography.